Fatal error: Uncaught Error: Object of class WP_Post could not be converted to string in /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/wp-content/plugins/advanced-custom-fields/includes/api/api-template.php:99 Stack trace: #0 /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/wp-content/plugins/advanced-custom-fields/includes/api/api-template.php(99): implode(', ', Array) #1 /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/wp-content/themes/nagasawa/single-products.php(116): the_field('lineup') #2 /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/wp-includes/template-loader.php(106): include('/home/nagasawa-...') #3 /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/wp-blog-header.php(19): require_once('/home/nagasawa-...') #4 /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/index.php(17): require('/home/nagasawa-...') #5 {main} thrown in /home/nagasawa-mfg/nagasawa-mfg.co.jp/public_html/test/wp-content/plugins/advanced-custom-fields/includes/api/api-template.php on line 99